[Rgc] Proposed abstract for October DNP meeting

[Marco Contalbrigo]

Dear Tony,
in the absence of objections, I added your DNP abstract
to the list to be approved by DPWG.

Next DPANA meeting (on June 28) will be devoted to
the review of the DNP abstracts projects.

Please be ready to present 1-2 slides to support your
abstract to let DPWG to review your plan before
the final submission to the Conference (deadline
1st of July).

Best regards, Marco.

On Thu, 21 Jun 2018, Tony Forest wrote:

> Fellow Collaborators:
>
> I am interested in submitting the abstract below for a contributed talk at this October’s DNP meeting.  Please send feedback.
>
> Tony Forest
>
>
> Down Quark Polarization Measurements with CLAS12
>
> Perturbative Quantum Chromodynamics (pQCD) predicts that the spin of a valence quark will align with the net spin of the nucleon as the quark begins to carry most of the nucleon’s momentum.  Previous measurements have yet to clearly illustrate this prediction for the down quark.  A comprehensive program to measure deep inelastic electron scattering using a polarized electron beam and polarized proton and deuteron  targets will soon be performed using the recently upgraded facilities at Jefferson Lab.  This program will facilitate the extraction of the down quark polarization within a nucleon to a kinematic regime where the struck quark may carry up to 80% of the nucleons momentum using a combination of the accelerator's 12 GeV polarized electron beam and the upgraded detector system in Jefferson Lab's Hall B   The anticipated precision of these measurements and their potential as a test of the pQCD prediction above will be presented.